TWI433712B - Wet electrostatic whirlpool dust collector - Google Patents

Description

Wet electrostatic cyclone dust collector

The invention relates to an air pollution prevention device, in particular to a cyclone dust collector which additionally increases a corona discharge mechanism for dust removal and uses washing water to clean the inner wall of the chamber.

The conventional cyclone dust collector has an inverted cone shape and is hollow inside and has a chamber, an air inlet and an exhaust port. When a waste gas to be treated enters the chamber through the air inlet, the exhaust gas The spiral flow in the chamber, the particles in the exhaust gas can be moved toward the tube wall by the centrifugal force, and then collected by gravity to be collected at the bottom end of the chamber, and the purified air stream can pass through the row. The port is discharged to the outside world.

The general cyclone dust collector is mainly used to remove particles with larger particle size. As for the secondary particle level or even nanometer particles, the cyclone dust collector cannot be removed, which makes the cyclone dust collector widely used in application. Restrictions, therefore, how to improve the design of the conventional cyclone dust collector to collect finer particles has been a research topic that needs to be broken.

In view of the above-mentioned deficiencies, it is an object of the present invention to provide a wet electrostatic cyclone dust collector which increases the discharge mechanism for dust removal and uses washing water to clean the inner wall of the chamber, thereby improving the overall particle removal efficiency, particularly the significant increase. The removal efficiency of the submicron particles.

In order to achieve the foregoing, the wet electrostatic cyclone dust collector of the present invention comprises a casing, an air inlet pipe, a water supply component, a discharge electrode pipe, a drain pipe and an exhaust pipe, wherein the casing is tapered. And a hollow chamber is formed therein, the outer casing is made of a conductive material, the air inlet pipe is connected to the outer casing and extends along a tangential direction of the outer casing, and the water supply member can be disposed inside the air inlet pipe or Inside the casing, the discharge electrode tube is housed in the chamber of the outer casing, and has a shaft tube portion, a plurality of perforations and a plurality of extension portions, the perforations are through the inner and outer sides of the shaft tube portion, and the extension portions are The peripheral wall of the outer side of the shaft tube portion is disposed, and the drain pipe and the exhaust pipe are connected to the outer casing.

In a preferred embodiment of the present invention, the water supply member includes a nozzle, and the extension portion of the discharge electrode tube has a triangular plate shape and is radially arranged around the shaft tube portion, and the discharge electrode tube is perforated. Formed in pairs on either side of the extension; in addition, the wet electrostatic cyclone may further include an annular wall, a liquid storage tank and an insulating cover, the annular wall being formed in the chamber of the outer casing And surrounding the discharge electrode tube, and forming an annular passage between the discharge electrode tube, the annular passage is connected to the chamber and the inside of the exhaust pipe, the liquid storage tank is connected to the drain pipe, and the bottom surface is a a slope, a partition may be disposed in the liquid storage tank, a gap is formed between the partition and the bottom surface of the liquid storage tank, and the insulating cover is disposed on the top side of the outer casing; further, the exhaust pipe has a setting hole for The shaft tube portion of the discharge electrode tube is disposed, and the shaft tube portion is fixed to the exhaust pipe by a connecting member, and the connecting member is disposed on an outer side of the exhaust pipe.

In another preferred embodiment of the invention, the extension of the discharge electrode tube is in the shape of a disk.

In another preferred embodiment of the invention, the exhaust pipe is coupled to the outer casing via the drain.

BRIEF DESCRIPTION OF THE DRAWINGS The following is a description of the preferred embodiments of the present invention and the accompanying drawings in which: FIG. 1 is a perspective view of a first preferred embodiment of the present invention; A cross-sectional view of the first preferred embodiment; a third view of the second embodiment of the discharge electrode tube of the first preferred embodiment of the present invention; and a fifth view of the second comparative embodiment of the present invention. A perspective view of a discharge electrode tube of a preferred embodiment; a sixth section is a cross-sectional view of a third preferred embodiment of the present invention; and a seventh section is a cross-sectional view of a fourth preferred embodiment of the present invention.

Referring to the first to third figures, the wet electrostatic cyclone 10 according to the first preferred embodiment of the present invention comprises a casing 20, an intake pipe 22, a water supply member 24, and a discharge electrode. The tube 26, an annular wall 28, a drain tube 30, an exhaust tube 32, a reservoir 34 and an insulating cover 36.

The outer casing 20 has an inverted cone shape and is hollow inside to form a chamber 201 which is made of a conductive material.

The intake pipe 22 is coupled to the outer casing 20 and extends along a tangential direction of the outer casing 20.

The water supply member 24 is disposed inside the intake pipe 22 and connected to a water supply pipe (not shown). The water supply member 24 includes a nozzle 241, and the washing water can be passed along the tangential direction of the outer casing 20. The intake pipe 22 is ejected toward the chamber 201, and the wash water flows spirally downward along the wall of the chamber 201.

The discharge electrode tube 26 is received in the chamber 201 and has a shaft tube portion 261, a plurality of through holes 263 and a plurality of extending portions 265 (as shown in FIG. 4) extending coaxially with the outer casing 20. And the inner portion is hollow, and the through holes 263 are semicircular and pass through the inner and outer sides of the shaft tube portion 261. The extending portions 265 are triangular plate-shaped and have sharp ends, and are radially arranged in groups of four. The through holes 263 are formed in pairs on either side of any of the extending portions 265; the discharge electrode tube 26 is electrically connected to a high voltage DC power supply (not shown), and The outer casing 20 is grounded such that an electric field is formed between the discharge electrode tube 26 and the outer casing 20, whereby when a particulate-laden exhaust gas enters the chamber 201, the discharge electrode tube 26 can be corona-discharged. The particles in the exhaust gas are charged, and the charged particles are further subjected to an electric field to move toward the wall surface of the outer casing 20.

In addition, in actual manufacturing, the manufacturer may first drill a circular through hole 263 on the shaft tube portion 261, and then weld the triangular piece extending portion 265 to the shaft tube portion in a manner of aligning the circular through hole 263. The surface of the 261, as such, the circular perforations 263 are naturally separated into two semi-circular perforations 263.

The annular wall 28 is disposed in the chamber 201 and surrounds the discharge electrode tube 26, and an annular passage 281 is formed therebetween; the annular wall 28 can block the wash water splashing from contacting the discharge electrode tube 26, To improve the safety of use.

The drain pipe 30 is connected to the bottom end of the outer casing 20 and extends coaxially with the outer casing 20.

The exhaust pipe 32 is connected to the top end of the outer casing 20 and integrally connected to the annular wall 28. The inside of the exhaust pipe 32 communicates with the chamber 201 via the annular passage 281. The exhaust pipe The wall of the tube 32 has a mounting hole 321 (as shown in the second figure) for the top end of the shaft tube portion 261 of the discharge electrode tube 26, and the shaft tube portion 261 is fixed to the exhaust portion by a connecting member 323. On the tube 32, the connecting member 323 is disposed on the outer side of the exhaust pipe 32.

The liquid storage tank 34 is connected to the bottom end of the drain pipe 32, and the bottom surface 341 is a slope. The liquid storage tank 34 is provided with a partition 343 for dividing the inside of the liquid storage tank 34 into two parts. The plate 343 and the bottom surface 341 of the liquid storage tank 34 have a gap 345. Further, the liquid storage tank 34 has a water outlet hole 347 and a pressure relief hole 349.

The insulating cover 36 is disposed on the top side of the outer casing 20 for covering the connecting member 323 and the top end of the discharge electrode tube 26.

Through the above structure, the wet electrostatic cyclone 10 is used in conjunction with an air pump (not shown); under the action of the air pump, a waste gas to be treated can pass through the air intake pipe. 22, entering the chamber 201, the particles in the exhaust gas can be simultaneously subjected to centrifugal force and electric field to move toward the inner side wall surface of the outer casing 20; before contacting the wall surface of the outer casing 20, the particles can be washed along the wall surface. The water is removed for cleaning to achieve the purpose of purification, and the purified gas stream can be discharged to the outside through the annular passage 281 and the exhaust pipe 32; as for the washing water with the exhaust particles, the drain pipe 30 can be passed through the drain pipe 30. And flowing into the liquid storage tank 34, the bottom surface 341 of the liquid storage tank 34 is a sloped surface, which contributes to concentrated collection of particles, and the clarified washing water can be returned to the water supply member 24 via the water outlet hole 347, The connected water supply line (not shown) is used repeatedly; the pressure relief hole 349 is used to adjust the internal pressure of the liquid storage tank 34, and is normally closed.

Further, the shaft tube portion 261 of the discharge electrode tube 26 is connected to a pulse jet controller (not shown) which intermittently generates a pulsed air flow and passes it through the discharge electrode tube 26. The perforations 263 are ejected to blow off the particles attached to the extension 265.

In the spirit of the present invention, the wet electrostatic cyclone can be freely changed in structure. Referring to the fifth figure, the extension portion 46 of the discharge electrode tube 40 can also be designed as a disk; please refer to In the sixth figure, the water supply member 56 can also be disposed in the chamber 521 of the outer casing 52, so that the same function can be achieved.

In addition, referring to the seventh embodiment, the wet electrostatic cyclone dust collector according to the fourth preferred embodiment of the present invention is substantially the same as that provided in the foregoing embodiment, and has a casing 61 and an air intake pipe 62. A discharge electrode tube 63, a drain tube 64, an exhaust pipe 65, a liquid storage tank 66, and an insulating cover 67 are different in that the exhaust pipe 65 is via the liquid storage tank 66 and the drain pipe 64. And connected to the outer casing 61, that is, the cleaned clean air stream and the washing water of the cleaning wall are separated from the chamber 612 via the drain pipe 64, and simultaneously flow into the liquid storage tank 66, wherein the clean air flow is The exhaust pipe 65 is discharged to the outside, and the wash water is stored in the liquid storage tank 66.

The above is only the detailed description and illustration of the preferred embodiments of the present invention, and the embodiments of the present invention and the similar variations thereof are included in the scope of the present invention, and any familiar with the Those skilled in the art, in light of the scope of the present invention, may be susceptible to variations or modifications.

10. . . Wet electrostatic cyclone dust collector

20. . . shell

201. . . Chamber

twenty two. . . Intake pipe

twenty four. . . Water supply

241. . . nozzle

26. . . Discharge electrode tube

261. . . Shaft tube

263. . . perforation

265. . . Extension

28. . . Ring wall

281. . . Ring channel

30. . . Drain pipe

32. . . exhaust pipe

321. . . Set hole

323. . . Connector

34. . . Reservoir

341. . . Bottom

343. . . Partition

345. . . gap

347. . . drainage

349. . . Pressure relief hole

36. . . Insulation cover

40. . . Discharge electrode tube

42. . . Shaft tube

44. . . perforation

46. . . Extension

50. . . Wet electrostatic cyclone dust collector

52. . . shell

521. . . Room

54. . . Intake pipe

56. . . Water supply

58. . . Discharge electrode tube

60. . . Wet electrostatic cyclone dust collector

61. . . shell

612. . . Chamber

62. . . Intake pipe

63. . . Discharge electrode tube

64. . . Drain pipe

65. . . exhaust pipe

66. . . Reservoir

67. . . Insulation cover

The first drawing is a perspective view of a first preferred embodiment of the present invention;

The second drawing is a cross-sectional view of a first preferred embodiment of the present invention;

The third figure is a cross-sectional view of the second figure along 3-3;

Figure 4 is a perspective view of a discharge electrode tube according to a first preferred embodiment of the present invention;

Figure 5 is a perspective view of a discharge electrode tube according to a second preferred embodiment of the present invention;

Figure 6 is a cross-sectional view showing a third preferred embodiment of the present invention;

Figure 7 is a cross-sectional view showing a fourth preferred embodiment of the present invention.

10. . . Wet electrostatic cyclone dust collector

20. . . shell

201. . . Chamber

twenty two. . . Intake pipe

twenty four. . . Water supply

26. . . Discharge electrode tube

261. . . Shaft tube

265. . . Extension

28. . . Ring wall

281. . . Ring channel

30. . . Drain pipe

32. . . exhaust pipe

321. . . Set hole

323. . . Connector

34. . . Reservoir

341. . . Bottom

343. . . Partition

345. . . gap

347. . . drainage

349. . . Pressure relief hole

36. . . Insulation cover

Claims (10)

A wet electrostatic cyclone dust collector comprising: a casing having a tapered shape and having a hollow interior to form a chamber, the outer casing being made of a conductive material; and an air inlet pipe connecting the outer casing and along the outer casing a tangential direction of the outer casing; a water supply member disposed inside the inner casing or inside the outer casing; a discharge electrode tube received in the chamber of the outer casing and having a shaft portion and a plurality of perforations And a plurality of extensions, the perforations are passed through the inner and outer sides of the shaft tube portion for a pulsed airflow, the extension portions are disposed on the outer peripheral wall of the shaft tube portion; and a drain pipe is connected to the outer casing And an exhaust pipe that is connected to the outer casing. The wet electrostatic cyclone dust collector according to claim 1, wherein the extension portion of the discharge electrode tube has a triangular plate shape and is radially arranged around the shaft tube portion. The wet electrostatic cyclone dust collector according to claim 1, wherein the extension portion of the discharge electrode tube has a disk shape. The wet electrostatic cyclone dust collector according to claim 1, wherein the perforations of the discharge electrode tube are formed in pairs on either side of any of the extension portions. The wet electrostatic cyclone dust collector according to claim 1, further comprising an annular wall formed in the chamber of the outer casing and surrounding the discharge electrode tube. The wet electrostatic cyclone dust collector according to claim 1, further comprising a liquid storage tank connected to the drain pipe, wherein the bottom surface of the liquid storage tank is a slope. The wet electrostatic cyclone dust collector according to claim 1, further comprising a liquid storage tank connected to the drain pipe, wherein the liquid storage tank is provided with a partition plate, and the partition plate and the bottom surface of the liquid storage tank A gap is formed between them. The wet electrostatic cyclone dust collector according to claim 1, further comprising an insulating cover disposed on a top side of the outer casing. The wet electrostatic cyclone dust collector according to claim 1, wherein the exhaust pipe has a hole for the shaft tube portion of the discharge electrode tube, and the shaft tube portion is connected by a connecting member. The exhaust pipe is fixed to the exhaust pipe, and the connecting member is disposed on an outer side of the exhaust pipe. The wet electrostatic cyclone dust collector according to claim 1, wherein the exhaust pipe is connected to the outer casing via the drain pipe.